Saw-set.



PATENTED DEC. 6, 1904.

H. F. STRETCH.

SAW SET.

APPLIOATION FILED NOV. 4, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

PATENTED DEC. 6, 1904.

H. P. STRETCH.

SAW s51. v APPLIOATION FILED NOV. 4, 1903.

H0 MODEL.

2 SHEETS-SHEET 2.

rrnn STATES iPatented December 6, 1904;.

HENRY F. STRETCH, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-FOURTH TOSTEPHEN M. PERRIGO, OF CHICAGO, ILLINOIS.

SAW-SET.

SPECIFICATION forming part of Letters Patent No. 776,562, dated December6, 1904.

Application filed November 4, 1903.

T0 (LZZ whom it may concern:

Be it known that I, HENRY F. STRETCH, a. citizen of the United States ofAmerica, and a resident of Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inSaw-Sets,of which the following is a specification.

The main objects of my invention are to provide a compact device adaptedfor the combined purpose of setting the teeth of a saw and gripping thesaw for the purpose of filing same; to provide in a saw-set an anvil andhammer suitably arranged for striking direct blows of uniform intensityand thereby avoiding the chance of flattening the edge of the saw, asfrequently occurs when a glancing blow is struck; to provide a hammerhaving reversible striking-surfaces, and to provide an adjustable gageextending each way from the hammer and having its guiding-surfacesarranged so as to be always in alinernent with each other.

I accomplish these objects by the device shown in the accompanyingdrawings, in which- Figure 1 is a side elevation of a combined saw setand filing device constructed according to my invention. Fig. 2 is a topplan of the same with the hammer disposed in a vertical position forthesake of clearness.

In the construction shown the supportingframe 1 is provided with asuitable clamp 2 for securing same to a bench or table and has an anvil3 mounted on the top of same. The anvil 3 is secured to the frame 1 bymeans of screws 5, which pass through transverse slots, (indicated bythe dotted lines 4 in Fig. 1,) the anvil being thus transverselyadjustable on the frame. The upper surface of the anvil is preferably inthe form of two plates meeting at an angle in a ridge 6, which serves asa supporting edge for a saw. The arm 7, forming part of the frame 1,extends transversely of the supporting edge 6 and. isprovided with twovertically-disposed threaded apertures 8, each adapted to receive thescrew 9, which is adjustable vertically and serves as a second supportfor the face of the saw, thus regulating the angle at which the teeth ofthe saw Serial No. 179,792. (No model are to be set. Agage 10 extends inparallel 5 relation with the supporting edge and 1s se- 'cured above theanvil 3 by means of screws 11, seated in adjusting-slots 12. Theguideplate 18 of the gage is vertically disposed and is adjustabletransversely of the supporting edge 6. The plate 13 extends each side ofthe middle of the anvil and has a U-shaped bend 14 at its middle part topermit the hammer 15 to strike the anvil. The U-shapcd part 14: rigidlyconnects the two guiding-faces of the gage and thus insures theirperfect alinement after readjustment.

An arm 16 is pivotally connected to the frame 1 by the bolt 17, which isprovided with a winged nut 18 for clamping the arm 16 in a fixedposition. Stops 19 and 20 limit the rotation of the arm when same israised to a vertical position and a shoulder 21 on the arm engages acoacting shoulder on the frame and limits the downward rotation of thearm to the horizontal position, as shown in the drawings. The arm 16 isforked at its outer end, one of the parts of the fork having a clamp jaw22 at its outer end, while a coacting clampjaw 23 is secured at theouter end of a lever 24, fulcrumed at 25 on the other part of the arm16. The position of the lever 24 is controlled by a cam 26, and the jawsform a vise suitable for clamping the blade of a saw while the teeth ofsame are being filed.

The arm 16 is provided with two verticallydisposed wings 27, betweenwhich the hammer-handle 28 is pivotally mounted. The head 29 of thehammer 15 is mounted on the outer end of the arm 28 and clamped in afixed position "between the nut 30 and the shoulder 31.. One of thestriking-faces of the hammer is considerably narrower than the other,and the head 29 is reversible on the arm, so that either of thestriking-faces may be turned to a position for striking the anvil 3.

The operation of the device shown is as follows: When the filing-face isto be used, the arm 16 is clamped in its vertical position by means ofthe winged nut 18 and the blade of the saw is clamped between the jawsof the vise.- After filing the teeth of the saw the arm 16 is returnedto the horizontal position,

as shown in the drawings, thus bringing the hammer into position forstriking the anvil. The toothed edge of the saw is not placed in contactwith the gage, being supported by the supporting edge 6 of the anvil andthe head of the screw 9. Vertical adjustment of the screw 9, regulatingthe angle of the face of the saw relatively to the anvil and adjustmentof the gage 10, is made to suit the length of the saw-teeth. Since thetwo parts 13 of the gage are secured in alinement through their rigidconnection with each other, adjustment of the gage relatively of thesupportingridge 6 is very simple. The teeth of the saw are now set bybringing the same successively under the hammer 15 and striking samewith the hammer. Since the handle of the hammer is pivoted to the frame,the radius at which the hammer acts is always the same. It will be seenthat this arrangement regulates the blows of the hammer to greatuniformity and also insures a direct blow upon the anvil and preventsflattening of one edge of the teeth. \Vhen teeth of different size areto be set, the head of the hammer may be reversed to suit the width ofsuch teeth.

It will be seen that some of the details of the construction shown maybe altered without departing from the spirit of my invention. Itherefore do not confine myself to such details, except as hereinafterlimited in the claim.

That I claim as my invention, and desire to secure by Letters Patent,is-

A saw-set comprising a supporting-frame having, mounted thereon, ananvil with an edge for supporting the saw-teeth; a vise pivoted to theframe to swing tranversely of said supporting edge; stops for limitingthe movement of the vise, on its pivotal connection, between a positionabove the anvil and a lower position; and a hammer mounted on the visewith its striking-head in position to act upon said anvil when theviseis in the lower position, substantially as described.

Signed at Chicago this 31st day of October, 1903.

HENRY F. STRETCH.

Witnesses:

STEPHEN M. Pnnnreo WM. R. RUmiLiiR.

